Hello All,, Specially for Autodesk Engineering Team,
My ideas refer from my post forum on :
https://forums.autodesk.com/t5/revit-mep-forum/create-library-duct-fitting-for-pressure-drop/td-p/88...
Thanks to Luna that advise to posting my question on "Idea"
The main thing of My Idea is:
The users sometimes have family's for duct/pipe fitting or accessories that not shown on ASHRAE Table Revit.
Currently, We put "Specific coefficient" manually for every single element that not shown on ASHRAE Table Revit.
The Idea is to make parameter on the family that integrated to the "specific coefficient"
The example we have a unique elbow that not shown on ASHRAE table and we are input the data or like calculation that when elbow change the size or throat radius or have Vanes, the "Specific Coefficient" automatically filled based previous our setting/input data on the parameter or anything else
